Received: 17-04-2020
Accepted: 29-08-2023
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Ảnh hưởng của việc bổ sung bột quế trong khẩu phần ăn đến khả năng sinh trưởng, năng suất thịt và các chỉ tiêu sinh lý, sinh hoá máu gà thịt
Keywords
Sinh lý máu, sinh hóa máu, gà
Abstract
Nghiên cứu này được thực hiện trên gà trống lai F1(♂Đông Tảo x ♀Lương Phượng) từ 7 đến 13 tuần tuổi nhằm đánh giá ảnh hưởng của bổ sung bột quế đến khả năng sinh trưởng và một số chỉ tiêu sinh hoá, sinh lý máu gà. Tổng số 90 con gà được chia ngẫu nhiên vào 3 lô, mỗi lô 30 con. Từ 7 tuần tuổi gà được nuôi bằng các khẩu phần ăn thí nghiệm gồm: lô đối chứng không bổ sung bột quế, lô 2 (CT1) bổ sung 2 gam bột quế/kg thức ăn và lô 3 (CT2) bổ sung 2,5 gam bột quế/kg thức ăn. Khả năng sinh trưởng, năng suất thịt của gà ở 2 lô bổ sung bột quế cao hơn so với lô đối chứng (P <0,01). Chỉ tiêu cholesterol toàn phần, LDL-cholesterol ở lô CT1 và lô CT2 thấp hơn so với lô đối chứng (P <0,05), trong khi HDL-cholesterol của lô CT1 và lô CT2 cao hơn so với lô đối chứng (P<0,05). Chỉ tiêu AST và ALT ở lô CT1 và lô CT2 thấp hơn so với lô đối chứng (P <0,05). Tế bào lympho và bạch cầu trong máu gà ở lô CT1 và lô CT2 thấp hơn so với lô đối chứng (P <0,05). Gà được nuôi bằng khẩu phần ăn của lô CT1 có chi phí để sản xuất 1kg gà thấp hơn so với lô đối chứng và lô CT2.
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